Hover Labels

import plotly
import plotly.express as px

df = px.data.gapminder()
fig = px.scatter(df.query("year==2007"), x="gdpPercap", y="lifeExp", size="pop", color="continent",
           hover_name="country", log_x=True, size_max=60)
fig.show(renderer='notebook')
plotly.offline.init_notebook_mode()

#fig.show()